This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A048559 #9 Dec 24 2014 22:54:01 %S A048559 4,49,49284,4928461209,492846120914204828164, %T A048559 4928461209142048281644440027571600000000001, %U A048559 49284612091420482816444400275716000000000017667716927194638935286982918857620344809476 %N A048559 a(n+1) is next smallest nontrivial square beginning with a(n), initial square is 4. %C A048559 Next terms are 171, 342 and 685 digits long. %Y A048559 Cf. A048560. %Y A048559 Cf. A048557, A249893, A249894, A249895, A249896, A249897, A249898, A048561. %K A048559 nonn,base %O A048559 0,1 %A A048559 _Patrick De Geest_, May 15 1999